never had one before - had to go back and find the paperwork to determine how much detergent it holds - want to be able to completely fill when empty - did find it holds 16 oz - seems like a decent amount.  Last time filling it must have gotten a bubble or something since with less than 8 oz added it started overflowing onto the counter.  Resolved but had a mess to clean up [This review was collected as part of a promotion.]